You know 2012 was an exciting year for web developers.
We just started learning 1998 CSS 2.1 and HTML 4.01. Why??? IE 6 prevented us from not being behind 10 years. It killed standards and we had to wait until it hit 1% and corporations who pay for the web developers who ran IE 6 saw a scrambled mess and said HEY WHO THEY HELL DID WE HIRE etc not realizing it was their poor 10 year old browser.
Grandma on XP uses IE 8 her internets won't work unless you do flash. THat client who pays you has IE 8 from 2009 because Oracle won't update their peoplesoft app without millions of dollars.
So we have to wait until CHina too who still uses XP with updates disabled so they are all on IE 6 to upgrade too by 2020.
In 2020 we can start to learn 2010 technology while the rest of us update every 6 weeks. Sigh and face palm. Flash will be here for a very very very long time short of making a law requiring TO STOP USING ANCIENT IE